Which table shows a proportional relationship between

and
?
A
x
12
14
16
18
20

y
6
12
18
24
30
B
x
3
6
9
12
15

y
4
10
16
22
28
C
x
5
10
15
20
25

y
1
2
3
4
5
D
x
4
8
12
16
20

y
2
4
8
14
20

The table that shows a proportional relationship between x and y is Option C:

x
5
10
15
20
25

y
1
2
3
4
5